Bola 700C 55mm Carbon Tubular Rim | 28mm Wide

$310.00 USD

~~$350.00 USD~~ $310.00 USD

Sale Sold out

Free shipping | VAT included in EU & USA

Weave UD Matt UD Glossy Marble Matt Marble Glossy

Spoke QTY 20/24 24/24 Customs

Weight Standard Superlight

The Bola 700C 55mm carbon tubular rim - a 28mm-wide U-shape glued-tyre race rim, asymmetric drilling, for aero road and time-trial builds.

The all-round race tubular: deep enough to hold speed, light enough to climb, the Bola 55mm tubular is the glue-tire racer's favourite compromise. Fifty-five millimetres of Toray carbon, 28mm wide, sold rim-only.

Buying Guide.

Weight tier - Superlight ~390g: the racer's pick - lightest end for a glued all-round race wheel.

Weight tier - Normal ~410g: the durable choice - a touch more layup margin for rougher race roads.

Max rider weight: rated to 120kg - check rider + gear before ordering.

Same-depth series: the 55mm U-shape tubeless is the tubeless sibling if you do not want to glue.

Adjacent depth: the 50mm tubular climbs better; the 60mm tubular goes deeper.

Target Audience & Usage Notes.

Target audience.: Road racers and time-trial riders who race on tubulars.

Rim-only.

Glue your own tyres; use carbon-specific rim-brake pads; respect 85 psi and 120kg.

Not for riders unwilling to glue.

The Ride That Awaits.

Cement a 25-28mm tubular, lace to a race hub, and feel the balance: the glued tyre turns every input to instinct, the 55mm section holding speed on the flat yet calm enough for rolling courses. One wheel, one race day, your race, no compromise. Free shipping, a 3-year rim warranty and crash-replacement discount.

Specifications

Size: 700c

Material: Genius Toray carbon fiber

Rim Depth: 55mm

Rim Type: Tubular / Glue-on

Glue Bed Width: 28

ERD (Effective Rim Diameter): 529mm

Weight Tier: TBD

Trade-offs & Considerations

Aero vs Crosswind: 55mm depth saves about 6.0W versus a 40mm rim at 40km/h; at 10° yaw it needs noticeably more steering input than the 45mm build, so it rewards flat, exposed courses more than rolling terrain.

Weight vs Stiffness: The Superlight layup (390g) saves about 20g versus the Normal layup (410g) at the same 55mm depth (±5g); lateral stiffness holds within 3% across the two layups.

Tire-Type Trade-off: Glue-on tubulars give about 8% lower rolling resistance than clincher tubeless, but the tyre is glued: service every 3–6 months, no roadside puncture repair and no sealant-based flat prevention.

Sourcing & Delivery Trade-off: Stock drilling ships in 1–3 business days at $310; custom spoke-hole count or valve hole adds 7–15 business days and roughly a $40–80 premium.

Performance Test Data

Fatigue Test: 750,000 cycles @640N (ISO 4210-7 Annex A, informative only)

Impact Resistance: >60J (Higher than ISO 4210-7)

Flatness: <0.25mm (internal QC)

Roundness: <0.3mm (internal QC)

Max Spoke Tension: >350 kgf (internal QC, spoke breaking tension)

Ultimate Strength: >300 kgf (internal QC, static spoke-hole point load)

Dynamic Equilibrium: <3g (internal QC)

Radial Stiffness: 80–92 N/mm (internal lab)

Lateral Stiffness: 16–23 N/mm

Max System Weight: 120kg

Recommended Use Cases

Road Racing Builds: 2026 peloton standard is 28-30mm tubeless on wide rims (TdF 2026 avg ≈30mm); 55mm section suits 40+ km/h racing.

Gran Fondo / Endurance: Modern 2026 frames (Propel, SuperSix, S5) design around 30-32mm clearance; 21mm inner bed pairs 25-32mm tubeless per ETRTO 2026 guidance.

Wheel Building: Custom road builds with disc or rim hubs; UD carbon layup options for weight-conscious or durable builds.

Weight Tier Selection: Offered in weight tiers (120kg); lighter for climbing, heavier for training and impact margin.

Compatibility

Frame: 700C (ISO 622) road frames with rim brakes

Tire Type: Tubular (glued)

Tire Width: 28-40mm tubular (25-28mm classic)

Valve: Presta (tubular valve)

Brake: Rim brake - use carbon-specific pads

How It Compares

Model	Weight	Depth	Width	Price
700C 55mm Tubular Rim 28mm	TBD	55mm	N/A	See store
Model A	~430g	50mm	N/A	$1,399
Model B	~430g	50mm	N/A	$249
Model C	~420g	50mm	N/A	$389

FAQ

Can I run clincher or tubeless tyres on this, or is it a glue-on tubular rim?

This is a dedicated tubular rim: you glue on tubular tyres. It is not drilled or shaped for clincher or tubeless clincher tyres.

What spoke drillings are available, and which brake type is this rim rated for?

Spoke drillings and brake rating depend on the build option, selectable at checkout. If you plan to lace your own wheel, confirm the drilling and brake type with Bola before ordering so the rim matches your hub and frame.

What spoke tension can I safely build to — will the holes pull out of the carbon?

Drive-side / disc-side maximum tension is 130–140 kgf, with the non-drive side adapted to match; the spoke holes are locally reinforced inside the carbon layup to prevent pull-out cracking.

How does this deep rim handle crosswinds at speed, and is it stable on descents?

The aerodynamic profile keeps steering torque predictable at 10°–15° yaw — the rim stays planted at speed in steady-state crosswinds, with slightly more steering input in gusty conditions than a shallower rim.

Will I really pay no customs or VAT for delivery to the US and EU?

Yes. The Economy channel ships DDP — duties and VAT are fully prepaid by us, cleared in advance, and delivered to your door with no extra payment to customs or the courier.

Warranty & Shipping

Warranty Period: 3 years

Crash Replacement: 30% discount on replacement parts

Processing Time: In stock: 1–3 business days · Out of stock or custom order: 7–15 business days

Shipping method: FedEx/UPS/DPD/EMS Economy (free with duties & VAT included in USA & EU) · Expedited option available

Estimated Delivery: Economy 7–20 business days · Expedited 3–7 business days, customs clearance excluded

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